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Subject[PATCH v2] locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()
Date
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Use __generic_cmpxchg_local() for arch_cmpxchg_local() implementation
in SH architecture because it does not implement arch_cmpxchg_local().

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310241310.Ir5uukOG-lkp@intel.com/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
arch/sh/include/asm/cmpxchg.h | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/sh/include/asm/cmpxchg.h b/arch/sh/include/asm/cmpxchg.h
index 288f6f38d98f..5d617b3ef78f 100644
--- a/arch/sh/include/asm/cmpxchg.h
+++ b/arch/sh/include/asm/cmpxchg.h
@@ -71,4 +71,13 @@ static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
(unsigned long)_n_, sizeof(*(ptr))); \
})

+#include <asm-generic/cmpxchg-local.h>
+
+#define arch_cmpxchg_local(ptr, o, n) ({ \
+ (__typeof__(*ptr))__generic_cmpxchg_local((ptr), \
+ (unsigned long)(o), \
+ (unsigned long)(n), \
+ sizeof(*(ptr))); \
+})
+
#endif /* __ASM_SH_CMPXCHG_H */
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